The Collaborative International Dictionary of English v.0.48:

Whiting \Whit"ing\, n. [From White.]
   [1913 Webster]
   1. (Zool.)
      (a) A common European food fish (Melangus vulgaris) of
          the Codfish family; -- called also fittin.
      (b) A North American fish (Merlucius vulgaris) allied to
          the preceding; -- called also silver hake.
      (c) Any one of several species of North American marine
          sciaenoid food fishes belonging to genus
          Menticirrhus, especially Menticirrhus Americanus,
          found from Maryland to Brazil, and Menticirrhus
          littoralis, common from Virginia to Texas; -- called
          also silver whiting, and surf whiting.
          [1913 Webster]

   Note: Various other fishes are locally called whiting, as the
         kingfish
      (a), the sailor's choice
      (b), the Pacific tomcod, and certain species of lake
          whitefishes.
          [1913 Webster]

   2. Chalk prepared in an impalpable powder by pulverizing and
      repeated washing, used as a pigment, as an ingredient in
      putty, for cleaning silver, etc.
      [1913 Webster]

   Whiting pollack. (Zool.) Same as Pollack.

   Whiting pout (Zool.), the bib, 2.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Menticirrhus americanus
    n 1: whiting of the southeastern coast of North America [syn:
         king whiting, Menticirrhus americanus]